The manufacturing method of the downward pressure connection mechanism of the suction nozzle rod

The Z-axis downward pressing mechanism is fixed on the mounting head fixing base plate 1. The Z-axis downward pressing mechanism includes a Z-axis downward pressing motor, a Z-axis belt and a downward pressing plate. The two sides of the downward pressing plate are connected to guide rods through linear bearings, and the two ends of the guide rods are fixed on the surface of the mounting head fixing base plate 1 through bearing seats. The surface of the mounting head fixing substrate 1 is provided with a motor installation through hole that matches the Z-axis downward pressing motor. One end of the rotating shaft of the Z-axis downward pressing motor passes through the motor installation through hole and is fixedly connected to the motor pulley 2. The surface of the mounting head fixing substrate 1 is also provided with a driven pulley 3 that matches the motor pulley 2. The motor pulley 2 is connected to the driven pulley 3 through the Z-axis belt. One section of the Z-axis belt is fixedly connected to the lower pressure plate. One end of the lower pressure plate is provided with a bearing fixing hole, and the bearing is nested and fixed in the bearing fixing hole. One end of the suction nozzle rod is embedded and fixed in the inner hole of the bearing. From the above, it can be seen that the current connection structure between the suction nozzle rod and the lower pressure plate has problems such as difficulty in installation and difficulty in ensuring installation accuracy. Specifically, it includes:

1. The axis lines of the bearing fixing hole and the suction nozzle rod must be on the same axis to ensure the mounting accuracy;
2. When the bearing is nested and fixed in the bearing fixing hole, a tool is also needed to strike it in order to fix it quickly.

In conclusion, it is necessary to further carry out technological innovation on the existing downward pressure connection mechanism of the suction nozzle rod.

The purpose of the case in this paper is to provide a downward pressure connection mechanism for the suction nozzle rod in view of the defects and deficiencies of the existing technology.

To achieve the above goals, the technical solution adopted in the case of this article is:

The downward pressure connection mechanism of the suction nozzle rod described in the case of this article comprises a suction nozzle rod pressure plate, a suction nozzle rod and a bearing assembly. The bearing assembly is composed of two flange bearings, which are embedded in the bearing fixed section and are symmetrically arranged towards each other. Each flange bearing is equipped with a flange. One end of the suction nozzle rod pressure plate is fixedly set on the bottom end of the downward pressure linkage plate. The outer circular wall of the suction nozzle rod is provided with a bearing fixed section that matches the inner hole of the flange bearing, and the flange bearing is embedded in the bearing fixed section. The other end of the suction nozzle rod pressure plate is provided with a U-shaped slot that matches the flange bearing, and the U-shaped slot is inserted into the outer circular walls of the two flange bearings. The U-shaped slot is located between the two flanges of the flange bearing, and the width of the U-shaped slot is less than the outer diameter of the flange.

After adopting the above structure, the beneficial effect of the case in this paper is as follows: The downward pressure connection mechanism of the suction nozzle rod described in this case includes a suction nozzle rod pressure plate, a suction nozzle rod and a bearing assembly. The bearing assembly is composed of two flange bearings, which are embedded in the bearing fixed section and are symmetrically arranged in opposite directions. Each flange bearing is equipped with a flange. One end of the suction nozzle rod pressure plate is fixedly set on the bottom end of the downward pressure linkage plate. A bearing fixed section matching the inner hole of the flange bearing is provided on the outer cylindrical wall of the suction nozzle rod, and the flange bearing is embedded in the bearing fixed section. The other end of the suction nozzle rod pressure plate is provided with a U-shaped slot that matches the flange bearing, and the U-shaped slot is inserted into the outer circular walls of the two flange bearings. When using the case in this article, there is no need to set a fixed hole for fixing the flange bearing on the downward pressure connecting plate. At the same time, the U-shaped slot is inserted into the outer wall of the flange bearing, and the movement of the U-shaped slot on the shaft is restricted by the two flanges of the flange bearing to prevent the U-shaped slot from disengaging from the suction nozzle rod. Compared with the existing technology, this device reduces the installation difficulty, makes the installation faster, and at the same time can ensure the placement accuracy of the surface mount machine.

The downward pressure connection mechanism of the suction nozzle rod described in the case of this article comprises a suction nozzle rod pressure plate 8, a suction nozzle rod 10 and a bearing assembly. The bearing assembly is composed of two flange bearings 16, which are embedded in the bearing fixed section and are symmetrically arranged in opposite directions. Each flange bearing 16 is provided with flange 16-1.

One end of the suction nozzle rod pressure plate 8 is fixedly set on the bottom end of the downward pressure linkage plate 6. The outer cylindrical wall of the suction nozzle rod 10 is provided with a bearing fixed section that matches the inner hole of the flange bearing, and the flange bearing is embedded in the bearing fixed section. The other end of the suction nozzle rod pressure plate 8 is provided with a U-shaped slot that matches the flange bearing 16, and the U-shaped slot is inserted into the outer circular walls of the two flange bearings 16. The U-shaped slot and the flange bearing 16 adopt a clearance fit to reduce the installation difficulty.

The U-shaped slot is located between the two flanges 16-1 of the flange bearing 16. The width of the U-shaped slot 8-1 is less than the outer diameter of the flange 16-1. That is to prevent the U-shaped slot of the suction nozzle rod pressure plate 8 from disengaging along the axial direction of the suction nozzle rod 10. Therefore, in this case, the two flanges 16-1 of the flange bearing 16 are fully utilized for limiting. This approach not only simplifies the connection structure and facilitates installation but also reduces production costs.

When using the case in this article, there is no need to set a fixed hole for fixing the flange bearing on the downward pressure connecting plate. At the same time, the U-shaped slot is inserted into the outer wall of the flange bearing, and the movement of the U-shaped slot on the shaft is restricted by the two flanges of the flange bearing to prevent the U-shaped slot from disengaging from the suction nozzle rod. Compared with the existing technology, this device reduces the installation difficulty, makes the installation faster, and at the same time can ensure the placement accuracy of the surface mount machine.